KR100444356B1 - A Guide Roller for Steel Box Girder to step forward using Incremental Launching Method - Google Patents

Abstract

The present invention is a guide roller device provided in the construction of steel box-type bridge by the continuous extrusion method, comprising a multi-stage supporting member and a hinge portion to distribute the load evenly, thereby preventing damage to the rollers due to overload and maintenance and It relates to a bridge advance guide roller device of the continuous extrusion method configured to reduce the time required for the construction.

The guide roller device according to the present invention is arranged side by side along the moving direction of the bridge top plate a plurality of rollers in contact with the lower surface of the bridge top plate and the upper member for rotatably supporting the rollers 50 And the upper member 52 is rotatably installed on the bridge, and is configured to distribute the load of the bridge upper plate acting on the roller 50 by rotating up and down when the bridge upper plate moves. It is characterized by that.

The present invention having such a configuration can prevent the collapse of the guide roller device due to the load concentration phenomenon, and further it is possible to extend the life of the guide roller device through proper distribution of the load and to reduce the construction cost.

Description

A Guide Roller for Steel Box Girder to step forward using Incremental Launching Method}

The present invention relates to a guide roller device for advancing a bridge of a continuous extrusion method, and more particularly, when constructing a steel box-type bridge by a continuous extrusion method, a guide roller device for guiding the movement of a bridge deck consisting of a steel box-type segment It is equipped with a support member and a hinge portion to distribute the load uniformly, thereby preventing the breakage of the roller due to the overload, and the bridge extrusion guide roller device of the continuous extrusion method configured to reduce the time required for maintenance and construction It is about.

As is well known, the Incremental Launching Method (ILM) of steel bridges is a steel box-shaped mold segment made of steel in advance at the factory, the segment is lifted and assembled, and the bridge is pushed into the axial direction by an extrusion apparatus. It is a construction method to construct the upper structure of the bridge by forming the top plate.

The continuous extrusion method is manufactured in advance in the steel box-type segment in the factory, and then lifted and assembled in order, and then proceeds to the axial direction by the extrusion device to integrate the completed upper structure of the bridge, high safety, construction management It is easy to use, and it is widely used as a construction method for bridges because it is not affected by external weather conditions during construction.

Here, when the bridge top plate made of steel box-type segments manufactured at the factory is sequentially pushed in the direction of the bridge by a separate extrusion device during the construction of the bridge through the continuous extrusion method, it prevents falling of the bridge top plate advancing and pier In order to minimize the friction with the upper surface is provided with a lateral guide on one side of the piers, and the guide roller device is installed on the upper surface of the piers, which will be outlined with reference to the accompanying drawings.

As shown in FIG. 1, in general, a mechanical device such as a hydraulic device is used when the bridge top plate 14 is extruded and advanced. There is a high possibility that a small error occurs in the extrusion direction due to an error in the machine operation. Due to such an error, the extrusion direction of the bridge deck 14 may sometimes deviate by a predetermined degree from the intended forward direction. In this case, as shown in FIG. 1, the side of the bridge 10 has a transverse guide (to prevent the bridge top plate 14 from falling out of the bridge 10 due to the compression error described above). By providing 16, falling of the bridge deck 14 can be prevented.

The lateral guides 16 are provided on both sides of the bridge 10 to guide the bridge plate 14 safely when the bridge plate 14 enters, and vertically fastened through the bridge 10. Horizontal fixing portion 20 provided to be inward from the upper side of the fixing portion 18 and the vertical fixing portion 18, the adjusting member 21 provided at one end of the horizontal fixing portion 20, and the bridge top plate ( It consists of a guide plate 22 which is directly rubbed on 14).

On the other hand, while supporting the bridge top plate 14 to be advanced from the lower surface of the bridge 10, the guide roller device 30 to reduce the friction during the extrusion of the bridge top plate 14 to perform the extrusion smoothly It is provided.

As shown in FIG. 3, the guide roller device 30 is arranged in one direction along a circumference of the horizontal support member 34 and the horizontal support member 34 provided between the vertical support members 32. A plurality of rollers 36, a link member 38 for connecting the respective rollers 36, and the caterpillar 40 provided along the periphery of each roller 36 to collect the rotational force of the rollers 36 have. The guide roller device 30 is firmly fixed to the fixing block 28 fixed to the upper surface of the pier 10 through a bolt 42 or the like.

However, since the caterpillar 40 in direct contact with the bridge deck 14 is made of a combination of thin chains as described above, a portion of the guide roller device 30 is loaded when the bridge deck 14 advances. Failure to endure could cause problems such as breakage or breakage, which caused a lot of time to replace or purchase the chain, which delayed the construction work.

In addition, the guide roller device 30 requires a separate management manpower to check the caterpillar 40 and the roller 36 from time to time to remove the risk factors that may occur during the construction in advance, moreover Since a plurality of rollers 36 connected through the link member 38 are provided inside the caterpillar 40, a lot of time and equipment are required when inspecting the caterpillar 40 and the roller 36.

Accordingly, the consumption of labor costs and material costs resulted in an increase in the overall construction cost and became a problem of inhibiting safe construction due to anxiety of the work environment.

Accordingly, the present invention was developed to improve the above-mentioned conventional problems, so that the load can be smoothly distributed while properly distributing the load of the bridge deck to be extruded by the continuous extrusion method, so as to shorten the air and facilitate maintenance. SUMMARY OF THE INVENTION An object of the present invention is to provide a bridge advance guide roller device of a continuous extrusion method having a structure that allows it.

1 is a front view showing a guide roller device and a transverse guide provided in a bridge construction of a conventional continuous extrusion method

2 is a plan view of a conventional guide roller device and a transverse guide shown in FIG.

3 is a side cross-sectional view taken along the line A-A 'of FIG.

Figure 4 is a perspective view of the guide roller device of the present invention

5 is a side cross-sectional view of FIG.

6 is a front view and main portion enlarged view showing a state in which the guide roller device of the present invention is used when the bridge construction of the continuous extrusion method;

* Description of the symbols for the main parts of the drawings *

10: pier 14: bridge deck

16: transverse guide 18: vertical fixing stop

20: horizontal fixing part 21: adjusting member

22: guide plate 26, 42, 61: bolt

28: fixed block 32: vertical support member

34: horizontal support member 36, 50: roller

38 link member 40 caterpillar

52: upper member 53, 59: support plate

54: rotation axis 56: upper hinge portion

57, 66: extension plate 58a, 58b: intermediate member

60: buffer member 62: lower hinge portion

64: base member 68: reinforcement

30, 100: guide roller device

The present invention for achieving the above object is a guide roller device for guiding the movement of the bridge top plate when a steel box-type bridge by a continuous extrusion method by moving the bridge top plate consisting of a steel box-type segment to move forward along the top of the bridge And a plurality of rollers arranged side by side along the moving direction of the bridge top plate and rolling in contact with the bottom surface of the bridge top plate, and an upper member rotatably supporting the rollers, wherein the top member pivots on the piers. It is provided so that a technical feature is that it distributes the load of the said bridge top plate which acts on the said roller by rotating up and down at the time of the said bridge top plate movement.

According to a specific embodiment according to the invention, further comprising an intermediate member interposed between the bridge and the upper member, the upper member is the upper end of the intermediate member in a state arranged in a plurality in the direction of movement of the bridge top plate Is rotatably installed on, the intermediate member may be rotatably installed on the top of the pier.

Further, in a specific embodiment of the present invention, the hinge portion, which is the pivot center of the intermediate member, is disposed between the hinge portions of each of the pair of upper members. Furthermore, a buffer member may be provided at the center of the intermediate member between the hinge portion of the upper member and the hinge portion of the intermediate member to attenuate the load of the bridge top plate acting through the hinge portion of the upper member. As the shock absorbing member, one having a structure formed by stacking a plurality of leaf springs may be used.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, but the same reference numerals are given to the same components as in the prior art.

The present invention is a guide roller device for guiding the movement of the bridge top plate when the bridge is laid by the continuous extrusion method of moving the bridge top plate along the upper end of the bridge, as shown in Figure 4, According to a specific embodiment of the guide roller device 100 by, the plurality of rollers and the rollers 50 are arranged side by side along the moving direction of the bridge top plate and the rolling contact with the lower surface of the bridge top plate, the rollers 50 And an upper member 52 capable of supporting the upper member 52, the upper member 52 being rotatably installed on the pier, and acting on the roller 50 by rotating up and down during the movement of the bridge upper plate. It is configured to distribute the load.

Specifically, in the guide roller device 100 according to the present invention, further comprises an intermediate member (58a, 58b) interposed between the bridge and the upper member 52, the upper member 52 is the bridge top plate It is rotatably installed on the upper end of the intermediate member (58a, 58b) in a state arranged in a plurality in the direction of movement, the intermediate member (58a, 58b) may be rotatably installed on the upper end of the piers.

The roller 50 is preferably provided with a large diameter to firmly support the working load, and each of the rollers 50 rotates about the rotating shaft 54, which is the upper member. 52 is rotatably installed.

Hinge portions 56 and 62 are provided between the upper member 52 and the intermediate member 58a or between the intermediate member 58b and the base member 64 so as to be rotated when a load is applied.

Between the upper member 52 and the intermediate member 58a, each upper member 52, which supports one or more rollers 50, can be rotated before and after the advancing direction of the bridge top plate 14. One or more hinges 56 may be provided.

As shown in FIG. 5, the upper member 52 is formed of a kind of support plate 53 on which the rotating shaft 54 of the roller 50 can be mounted, and is provided at left and right sides of the roller 50. Since the member 58a also includes an extension plate 57 at a position corresponding to the support plate 53 of the upper member 52, the upper hinge portion 56 has the support plate 53 and the extension plate 57. It will be provided in the overlapping place.

Similarly, the lower hinge portion 62 provided between the intermediate member 58b and the base member 64 also has an upper side of the support plate 59 and the base member 64 provided below the intermediate member 58b. It is provided so that the extension plate 66 extending in contact with the intermediate member 58b is rotated around the lower hinge portion 62 when a load is applied to the intermediate member 58b.

In addition, in the center of the intermediate members 58a and 58b between the hinge portion 56 of the upper member 52 and the hinge portion 62 of the intermediate members 58a and 58b, an upper portion of the upper member 52 is provided. A shock absorbing member 60 is provided to reduce the load of the bridge top plate acting through the hinge portion 56. The buffer member 60 may be configured by stacking a plurality of leaf springs, for example. When the shock absorbing member 60 is provided in a form in which a plurality of leaf springs are stacked, it is possible to more flexibly support the load of the upper structure.

In addition, one side of the base member 64 may be provided with a reinforcement 68 for supporting the load applied.

The present invention configured as described above is to properly disperse the load of the advancing bridge top plate by minimizing the load applied to the guide roller device and to smoothly advance the bridge top plate.

That is, when the bridge top plate 14 is extruded by the continuous extrusion method, the roller 50 contacting the lower surface of the bridge top plate 14 rotates and advances the bridge top plate 14, wherein the roller top plate 14 is applied to the roller 50. The load of the bridge upper plate 14 is transmitted to the upper member 52, and the upper member 52 is hinged to the lower intermediate member 58a, so that the intermediate member 58a receives the upper member 52. At the same time as the support and the rotation of the upper hinge portion 56 it is possible to distribute the load from the upper member (52).

In other words, when the bridge top plate 14 passes over the roller 50 of the upper member 52, the load is transmitted to the support plate 53 of the upper member 52 through the rotation shaft 54. Accordingly, the support plate 53 is inclined to one side with respect to the lower upper hinge portion 56 and then restored again after the bridge top plate 14 passes. As a result, the load applied by the bridge deck 14 is uniformly distributed.

In addition, since the intermediate member 58b is also hinged to the lower base member 64, it is possible to further distribute the applied load while rotating around the lower hinge portion 62.

In addition, a buffer member 60 is provided between the intermediate members 58a and 58b, and a plurality of predetermined reinforcements 68 are provided outside the extension plate 66 of the base member 64. Helps to properly distribute and support the load applied to the roller device (100).

6 is a view illustrating an embodiment of using the guide roller device 100 of the present invention in bridge construction.

As shown in FIG. 6, it is preferable to use the guide roller device 100 in pairs on the lower side of the bridge upper plate 14, and the base member 64 of the guide roller device 100 is pier 10. Use a separate fixing means on the upper surface to fix it firmly.

In addition, the guide roller device 100 in the present invention, the upper member 52 and the intermediate member (58a, 58b) having a roller 50 for convenience, the base member 64 supporting them and attached to the piers 10 Although the embodiment has a three-point hinge structure for the three-stage member and the upper member 52 and the intermediate member (58a, 58b) of the seesaw operation is disclosed, the present invention is not limited thereto, and the technical Of course, many variations and modifications are possible within the scope of the idea.

As described above, by using the guide roller device of the present invention in the construction process of steel box type bridges, it is possible to prevent the collapse of the guide roller device due to load concentration phenomenon and further extend the life of the guide roller device through proper distribution of loads. In addition to this, construction costs can be reduced.

In addition, the extruded bridge deck can be smoothly advanced, greatly shortening the construction period, and the work process is quick and convenient, so it is possible to expect improvement of construction capacity, cost reduction, and production of high-quality bridge structure at the same time. It is.

In addition, there is no need for a separate maintenance manpower has the advantage of reducing labor costs.

Claims (4)

delete delete delete In the guide roller device for guiding the movement of the bridge deck when the bridge is laid by a continuous extrusion method of moving the bridge deck consisting of a steel box segment along the upper end of the bridge, A plurality of rollers 50 arranged side by side along the moving direction of the bridge top plate and rolling contact with the bottom surface of the bridge top plate, an upper member 52 for rotatably supporting the rollers 50, and a hinge portion ( A middle member (58a, 58b) rotatably installed on the upper end of the pier by 62; The upper member 52 is rotatably installed on the upper end of the intermediate member (58a, 58b) by the hinge portion 56 in a state arranged in a plurality in a direction along the moving direction of the bridge top plate; A hinge portion 62 which is a pivot center of the intermediate members 58a and 58b is disposed between a pair of hinge portions 56 of the upper member 52; In the center of the intermediate member 58a, 58b between the hinge portion 56 of the upper member 52 and the hinge portion 62 of the intermediate member 58a, 58b, the hinge portion of the upper member 52 A buffer member 60 is provided to reduce the load of the bridge deck acting through 56. The bridge is applied to the roller 50 by rotating the upper member 52 up and down when the bridge deck moves. Bridge advancing guide roller device of the continuous extrusion method characterized in that the load of the upper plate is dispersed.